Mounting of front feed device for business writing machines



16, 1956 A. SALZBERGER 2,

MOUNTING OF FRONT FEED DEVICE FOR BUSINESS WRITING MACHINES Filed Aug.17, 1953 United States MOUNTING OF FRONT FEED DEVICE FOR BUSINESSWRITING MACHINES Andreas Salzberger, Frankfurt am Main, Germany, as-

signor to Torpedo-Werke Aktiengesellschaft Fahrrader undSchreibrnaschinen, Frankfurt am Main Rodeiireirn, Germany, a Germancompany The invention concerns business writing machines provided withfront feed devices. These front feed devices consist of hopper guidessituated above and in front of the platen for introducing one or moreaccount cards from the front into the paper guide of the platen, infront of the basic sheet already drawn in and remaining in the machine,said basic sheet being inserted into the machine from the rear in theusual way. As a rule, the feed hoppers are mounted on the side plates ofthe machine carriage in a detachable or upwardly hingeable manner, so asto be able to bring the basic sheet, inserted from the rear, behind theupper press-on rollers and to align it. The invention relates to a newmethod of pivoting these front feed devices, which enables outwardpivoting and also complete removal in a simple manner.

According to the invention, the front feed device is held pivotally onboth sides by means of eyes in the side plates of the machine carriage,and is adapted to be locked to the side plates in the working positionagainst spring pressure, so that after release of the locking device, itis pivotally urged to the rear. The springs controlling the front feeddevice are furthermore preferably formed as coil springs accommodated intelescopic tubes of limited relative extension, the telescopic tubesbeing pivoted at one end to the side plates of the front feed devicecarrying the pivots, and at the other end advantageously pivoteddetachably to the side plates of the machine carriage. The lockingdevice may consist of noses mounted on the side plates of the front feeddevice, co-operating with spring-loaded locking hooks which are providedon the side plates and which, in the working position of the front feeddevice engaging over the noses, and can be moved out of engagement withthe noses by push rods on the side plates of the front feed device.

By operating the push rods, which for this purpose are provided withpush buttons projecting beyond the cover edge of the side plates of thefront feed device, the locking device is thus released, and thetelescopic tubes, extended by the springs therein, turn the front feeddevice to the rear a distance controlled by the limited relativeextension of the tubes. On the front feed device being brought forwardinto the position of use, the locking hooks engage again and hold thedevice fast. The noses lie on adjustable end stops associated with thelocking hooks, thus limiting the path of pivoting of the front feeddevice.

The pivots are provided with flattened portions and the bearing eyesreceiving them are provided with slots corresponding to the flattenedportions, said slots being so arranged that, after detaching thetelescopic tubes from the machine carriage, the front feed device can beturned further to the rear, so that the flattened portions coincide withthe slots, in which position the front feed device can be lifted offwithout difliculty.

The above, and other features and advantages of the invention, areexplained more fully with reference to the accompanying drawings showingan embodiment of the invention, and wherein:

atent G M 2,766,867 Patented Oct. 16, 1956 Fig. 1 shows one of the sideplates of the front feed device in the working position.

Fig. 2 shows the device on its inoperative position.

The front feed device, not shown, is carried at its opposite sides bythe side plates 1 each provided with a bentover edge 2 for covering theworking parts. Each side plate 1 carries a pivot pin 3, flattened atopposite faces 4, which pivot pins 3 may also be parts of a rodconnecting the two side plates 1. Furthermore, secured to each sideplate 1 is a strip 5 which is bent over at the lower edge of the plateto form a locking nose 6.

The side plates 7 of the machine carriage each carry a bracket 8provided at its rear end with an open eye 9 for receiving the pin 3. Theinsertion slot 10 of the eyes 9 corresponds in width to the distanceapart of the flattened faces 4, so that therefore, when the pins 3 arein a certain position with respect to the eyes 9, the pins can beinserted in, or removed from, the related eyes.

The forward pivoting of the side plates 1 on the machine carriage islimited by adjustable stop pins 11 on the brackets 8, and on which thenoses 6 are adapted to rest. To secure the side plates 1 in the workingposition of the front feed device, locking hooks 12 are pivoted to thebracket 8, said locking hooks being loaded by springs not shown, andengaging over the noses 6 in the working position of the front feeddevice.

For releasing the locking hooks 12, push rods 13.are provided, each ofsaid push rods being carried at one end by means of an operating button14 extending slidably through an opening in the edge 2 of the relatedside plate 1, and at the other end in an upwardly bent eye 15 of therelated nose 6. The push rods 13 are held in the basic position by meansof springs 17 mounted thereonand bearing against the eyes "15 andagainst a collar 16 of the buttons 14. When the buttons 14 are pressedrearwardly, the rods 13 bear against upwardly bent lugs 18 on thelocking hooks 12, which are thereby swung outwardly for releasing thenoses 6.

In order to effect automatic turning over of the front feed device withthe release of the noses, there is pivoted to each side plate 1 on a pin19, the outer sleeve 20 of a telescopic tube, in which an inner sleeve21 can be telescoped to a limited extent. The inner sleeve 21 isprovided with a pin 22 passing through a slot in the outer sleeve 20.Accommodated in both sleeves 20, 21 is a coil spring 23, the purpose ofwhich is to hold the sleeves 20, 21 in a relatively extended position(Fig. 2).

The inner sleeve 21 carries a radial pin 24, engaging an open slot 25 ofthe bracket 8. A tension spring 26 mounted between the outer sleeve 20and the side plate 1 urges the sleeves 20, 21 angularly about the pin 19in such a direction that the pin 24 is held in the slot 25.

For removing the front feed device, in the position shown in Fig. 2, thesleeves 20, 21 are turned by hand against the action of the spring 26,so that the pin 24 is lifted out of the slot 25. The front feed devicecan thus be turned over about the pivot 3 until the flattened portions 4coincide with the insertion slot 10, in which position the device can bedrawn otf or inserted. On pivoting the front feed device toward theposition of Fig. 2, after the pivot pins 3 have been again engaged inthe eyes 9, the pins 24 then automatically catch in the slots 25.

I claim:

1. In a business machine having a carriage, an arrangement for hingedlymounting a front feed device on the side plates of the carriage; saidarrangement comprising side plates on the front feed device, pivot pinsextending from the side plates of the front feed device adjacent theback of the latter, mounting brackets on the side plates of the carriagehaving eyes for receiving said pivot pins so that the front feed deviceis turnable rear- 3 Wardly about said pivot pins from a workingposition, spring actuated means for urging the front feed device to turnrearwardly about said pivot pins from said working position,noseyprojectingfrom said side plates of the front feed device atlocations spaced forwardly from said pivot pins, locking hooks rockablymounted on the side plates of the-carriage and engageable Withsaid nosesto hold the front feed device in its workingposition against the actionof said spring actuated means, and push-rods slidablymounted on saidside plates of the front feed device and projecting from the latter,said push-rods being engageable with said locking hooks to rock thelatter out of engagement with said noses" in response to actuation ofsaid push-rods so that said-spring actuated means are then free toturn'the front feed device rearwardly from said working positionthereof. t

2. The combination according to claim 1; wherein said sideplates of thefront'feed device have laterally bent related one of said noses and saidcollar to yieldably urge 7 to the adjacent side plate of the carriage.

4. The combination according to claim 3; further comprising meanslimiting the relative extension of said teleturning at said workingposition.

scoping tubes; and wherein said means pivotally cori meeting said otherend of the tubes to the adjacent side plate of the carriage'includes aradial pin projecting from said other end of the telescoping tubes,'saidmounting brackets having slots therein opening generally toward thefront to receive said radial pins of the adjacent telescoping tubes, andspring means acting on said telescoping tubes to swing the latterin thedirection urging said radial pins rearwardly in said slots therebytoprevent inadverent removal of said radial pins from, the slots. 7

5. The combination according to claim 1; wherein said pivot pins havediametrically opposed flattened sides, and said eyes have openings withthe distance across said open- 6. The combination according to claim 5;wherein said spring actuated means includes slidably telescopic tubeshaving spring means therein to urge said tubes to a limited extendedposition, means pivotally connecting said tubes, at one end, to saidside plates of the front, feed device, and means for pivotally, andremovably connecting said tubes, at the other end thereof, to therelated side plates of the carriage.

I 7. The combination according to claim 1; further comprising adjustablestop members on said mounting brackets engageable by said noses duringforward turning of the front feed device'thereby to limit such forward 1References Cited in the file of this patent V V UNITED STATES PATENTS2,127,798 Wittenmyer Aug. 23, 1938 2,139,095 Pfeifier Dec. 6, 19382,649,950 Endrich Aug. 25,.1 953

